136099491 has 8 divisors (see below), whose sum is σ = 197962944. Its totient is φ = 82484520.

The previous prime is 136099477. The next prime is 136099493. The reversal of 136099491 is 194990631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 136099491 - 2⁶ = 136099427 is a prime.

It is not an unprimeable number, because it can be changed into a prime (136099493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2062081 + ... + 2062146.

It is an arithmetic number, because the mean of its divisors is an integer number (24745368).

Almost surely, 2^136099491 is an apocalyptic number.

136099491 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

136099491 is a deficient number, since it is larger than the sum of its proper divisors (61863453).

136099491 is a wasteful number, since it uses less digits than its factorization.

136099491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4124241.

The product of its (nonzero) digits is 52488, while the sum is 42.

The square root of 136099491 is about 11666.1686512754. The cubic root of 136099491 is about 514.3816892201.

The spelling of 136099491 in words is "one hundred thirty-six million, ninety-nine thousand, four hundred ninety-one".